In vitro propagation and the acclimatization effect on the synthesis of 2-hydroxy-4-methoxy benzaldehyde in Decalepis hamiltonii Wight and Arn.

• Autorzy: Sharma S. , Shahzad A. , Ahmad A. , Anjum L.
• Języki publikacji: EN

Abstrakty

EN

The present study reports a high frequency in vitro propagation protocol through apical bud sprouting and basal organogenic nodule formation in shoot tip explants of Decalepis hamiltonii, an endemic and endangered medicinal liana. Among different combinations of plant growth regulators (PGRs) and growth additives, maximum of 8.20 shoots per explant with mean shoot length of 6.54 cm were induced on Murashige and Skoog’s medium (MS) supplemented with 5.0 µM 6-benzyladenine (BA) + 0.5 µM indole-3-acetic acid (IAA) + 30.0 µM adenine sulphate (ADS) through apical bud sprouting. On single cytokinin treatment explants did not exhibit good multiplication but showed nodulation (N₁) from the basal cut end similar to cytokinin–auxin combination (N₂). Between two types of nodular tissues, N₂ was proved to be better for maximum shoot regeneration (15.40 shoots per explant) and shoot length (4.56 cm) when cultured on MS medium supplemented with 5.0 µM BA, 0.5 µM IAA, 30.0 µM ADS and 1.0 µM gibberellic acid (GA₃). Microshoots were efficiently rooted on half-strength MS medium supplemented with 2.5 µM α-naphthalene acetic acid (NAA). After successful acclimatization in Soilrite, 95.10 % plantlets were survived in field conditions. Histological investigation proved useful in ascertaining the callogenic nature of the regenerating nodular tissue formed at the basal cut end of shoot tip explant. Acclimatized plantlets were studied for the estimation of chlorophyll and carotenoid content as well as the net photosynthetic rate (PN) during subsequent days of transfer to ex vitro condition. Moreover, acclimatization had a significant effect on biomass production and the synthesis of 2-hydroxy-4-methoxy benzaldehyde (2HMB). Maximum fresh weight (3.78 gm/plant), dry weight (0.39 gm/plant) of roots and 2HMB content (15.94 µg/ml of extract) were noticed after 8 weeks of acclimatization.

Słowa kluczowe

EN

Decalepis hamiltonii; plant propagation; in vitro propagation; acclimatization; synthesis; 2-hydroxy-4-methoxybenzaldehyde; histology; plant growth regulator; nodulation; secondary metabolite; swallow root

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2014
• Tom: 36
• Numer: 09
• Opis fizyczny: p.2331-2344,fig.,ref.

Twórcy

autor

Sharma S.

• Plant Biotechnology Laboratory, Department of Botany, Aligarh Muslim University, 202 002 Aligarh, UP, India

autor

Shahzad A.

• Plant Biotechnology Laboratory, Department of Botany, Aligarh Muslim University, 202 002 Aligarh, UP, India

autor

Ahmad A.

• Department of Botany, Faculty of Science, Jamia Hamdard (Hamdard University), 110 062 New Delhi, India

autor

Anjum L.

• Department of Botany, Faculty of Science, Jamia Hamdard (Hamdard University), 110 062 New Delhi, India

Bibliografia

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Identyfikatory

DOI

10.1007/s11738-014-1606-9